Device for preventing short circuit in high-temperature-resistant insulation mode

Abstract

The utility model discloses a high temperature resistant insulation mode short circuit prevention device, which comprises a ceramic insulation column, a screw rod, an inner isolation column and a fixed installation body, an external thread liner tube is embedded in the middle of the ceramic insulation column, the inner isolation column is fixedly installed at the tail part of the ceramic insulation column, an internal thread liner tube is embedded in the front part of the inner isolation column, and the internal thread liner tube is fixedly installed at the tail part of the ceramic insulation column. The screw rod is matched with the external thread liner tube and the internal thread liner tube, the fixed mounting body is embedded in the tail part of the internal isolation column, and a plurality of equidistant disc rings are integrally formed on the periphery of the ceramic insulation column; the metal heat screen and the shell are effectively and fixedly installed through cooperation of the screw rod and the ceramic insulation column, insulation shielding is conducted on the internal screw rod through the ceramic insulation column, meanwhile, the ceramic insulation column and the inner isolation column are matched with the fixed installation body to conduct supporting installation on the heating body, and supporting, isolation, insulation, shielding and heat resistance maintaining of the whole structure are achieved. And the device can ensure effective function maintenance under the severe working condition of the furnace chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial furnaces, in particular to a high-temperature resistant insulation device for preventing short circuits. Background Art

[0002] Industrial vacuum resistance furnace is an industrial equipment that integrates vacuum, mechanics, electronics and automatic control.

[0003] Equipment that can obtain high temperature (generally above 1000 degrees Celsius) in a vacuum environment. Its core component is a heating chamber assembly composed of stainless steel and refractory metals. The furnace chamber of the vacuum resistance furnace is used to connect the metal heat shield, heating element and shell into one high-temperature resistant rigid insulating part. According to the use occasion and use temperature, there are generally alumina insulating parts and boron nitride insulating parts. During the normal operation of the vacuum furnace unit, the high-temperature resistant insulating parts serve as insulating parts for both the heating element and the metal heat shield on the one hand, and as a supporting structure for the heating element parts on the other hand. The vacuum resistance furnace is used in special process occasions, such as: the melting point of the solder in the brazing process is low. During the brazing process, a small part of the solder evaporates and is free in the vacuum chamber as metal vapor. The furnace temperature drops, and the solder vapor is deposited inside the vacuum chamber. During the vacuum sintering process, some special components in some special alloys, low-melting-point metals such as iron, aluminum, and tin evaporate. The metal vapor in the above occasions is eventually deposited in various places inside the vacuum chamber, and the sediment is attached to the high-temperature resistant insulating parts, eventually forming a metal film. When the film reaches a certain thickness, the film resistance value decreases, and conductivity occurs, resulting in electrical conduction between the metal heating element and the heat insulation screen and other metal structures. At this time, the resistance of the heating element parts to the ground is reduced, the equipment is short-circuited to the ground, the vacuum resistance furnace equipment cannot operate normally, and the vacuum resistance furnace shell is electrified, posing a threat to the personal safety of workers.

[0004] Therefore, a high temperature resistant insulation method is proposed to prevent short circuit equipment. Utility Model Content

[0005] The purpose of the present invention is to provide a high temperature resistant insulation device for preventing short circuits, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-temperature resistant insulation device for preventing short circuits, comprising a ceramic insulating column, a screw, an inner isolating column and a fixed body, an externally threaded liner embedded in the middle of the ceramic insulating column, the inner isolating column is fixedly installed at the tail of the ceramic insulating column, an internally threaded liner embedded in the front of the inner isolating column, the screw and the externally threaded liner and the internally threaded liner match each other, the fixed body is embedded at the tail of the inner isolating column, and a plurality of equidistant disc rings are integrally formed on the outer circumference of the ceramic insulating column.

[0007] According to the above technical solution, the front end of the insulating ceramic column is provided with an embedding groove, and a deformable sealing ring is embedded in the embedding groove.

[0008] According to the above technical solution, the inner isolation column is fixedly installed on the rear end of the ceramic insulating column by embedding or threaded fitting, and a buffer pad is provided between the inner isolation column and the ceramic insulating column.

[0009] According to the above technical solution, an insulating cavity is integrally formed in the inner isolation column, and the insulating cavity is located at the front side of the fixed body.

[0010] According to the above technical solution, a communicating cavity is provided in the ceramic insulating column and the disc ring, and an inner metal sheet is fixedly installed in the cavity.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0012] The metal heat insulation screen and the shell are effectively fixed and installed through screws and ceramic insulating columns, and the internal screws are insulated and shielded by ceramic insulating columns. At the same time, the ceramic insulating columns and internal isolation columns cooperate with the solid body to support and install the heating element, realizing the support, isolation, insulation, shielding and heat resistance maintenance of the overall structure, so that the device can ensure effective function maintenance under the harsh working conditions of the furnace chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from one viewing angle;

[0015] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0016] In the figure: 1. Ceramic insulating column, 2. Screw, 3. Disc ring, 4. Inner isolation column, 5. Tailstock, 6. Fixed body, 7. Deformation sealing ring, 8. Externally threaded liner, 9. Internally threaded liner, 10. Buffer pad, 11. Insulating cavity, 12. Inner metal sheet. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1

[0019] See also Figure 1-2 The utility model provides a technical solution: a high-temperature resistant insulation method to prevent short-circuit equipment, including a ceramic insulating column 1, a screw 2, an inner isolation column 4 and a fixed body 6, the middle part of the ceramic insulating column 1 is embedded with an external threaded liner 8, the inner isolation column 4 is fixedly installed at the tail of the ceramic insulating column 1, the front part of the inner isolation column 4 is embedded with an internal threaded liner 9, the screw 2 and the external threaded liner 8 and the internal threaded liner 9 match each other, the fixed body 6 is embedded with the tail of the inner isolation column 4, and the outer circumference of the ceramic insulating column 1 is integrally formed with a plurality of equidistant disc rings 3.

[0020] The main body's isolation and insulation structure is formed by the ceramic insulating column 1 and the internal isolation column 4. The fixed body 6 fixes the heating body on the isolation and insulation structure. The screw 2 cooperates with the external threaded liner 8 and the internal threaded liner 9 to fix the isolation and insulation structure on the metal thermal insulation screen and the shell. The disc ring 3 on the outer periphery of the insulating ceramic column forms a wrinkled surface, which makes the overall electrical breakdown surface closer, thereby reducing the risk of electrical breakdown of the screw 2.

[0021] Specifically, a groove is provided at the front end of the insulating ceramic column, and a deformable sealing ring 7 is embedded in the groove.

[0022] By embedding the deformation sealing ring 7, the insulating ceramic column is more closely fitted to the metal heat insulation screen and the shell, thereby preventing leakage of metal vapor and deformation of the pressure metal heat insulation screen and the shell.

[0023] Specifically, the inner isolation column 4 is fixedly installed on the rear end of the ceramic insulating column 1 by embedding or threaded fitting, and a buffer pad 10 is provided between the inner isolation column 4 and the ceramic insulating column 1.

[0024] By combining the inner isolation column 4 with the ceramic insulating column 1, the combination of the two is made more stable. At the same time, the screw 2, the external threaded liner 8 and the internal threaded liner 9 can better ensure the stability of the overall installation. The buffer pad 10 is provided to buffer the contact between the screw 2, the external threaded liner 8 and the internal threaded liner 9 when they interact with each other.

[0025] Specifically, an insulating cavity 11 is integrally formed in the inner isolation column 4 , and the insulating cavity 11 is located at the front side of the fixing body 6 .

[0026] By providing the insulating cavity 11 , the overall insulation of the inner isolation column 4 is changed, while the electrical breakdown distance is increased and the insulation is improved.

[0027] Specifically, a communicating cavity is defined in the ceramic insulating column 1 and the disc ring 3 , and an inner metal sheet 12 is fixedly installed in the cavity.

[0028] By setting a cavity in the ceramic insulating column 1 and the disc ring 3 and fixing the inner metal sheet 12, an outer shielding layer is formed to improve the overall electrical breakdown flatness.

[0029] Working principle: When in use, first match the fixed body 6 with the tailstock 5 and the inner isolation column 4 to fix the heating body, then fix the inner isolation column 4 on the ceramic insulating column 1, and then pass the screw 2 through the shell and the metal heat insulation screen to match the external threaded liner 8 and the internal threaded liner 9 to effectively fix the entire device.

[0030] The metal vapor generated in the furnace chamber of the vacuum resistance furnace adheres to the outer surface of the device and is effectively insulated and isolated by the ceramic insulating column 1 and the inner isolation column 4. When an electrical breakdown occurs, the corrugated surface, the main structure of the insulating material and the inner metal sheet 12 form an effective electric shock diversion and shielding, thereby avoiding the problem of the vacuum resistance furnace shell being charged and the ground short circuit.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-temperature resistant insulation device for preventing short circuits, comprising a ceramic insulating column (1), a screw (2), an inner isolation column (4) and a fixed body (6), characterized in that: An external threaded liner (8) is embedded in the middle of the ceramic insulating column (1), the internal isolation column (4) is fixedly installed at the tail of the ceramic insulating column (1), an internal threaded liner (9) is embedded in the front of the internal isolation column (4), the screw (2) and the external threaded liner (8) and the internal threaded liner (9) are matched with each other, the fixed body (6) is embedded in the tail of the internal isolation column (4), and the outer periphery of the ceramic insulating column (1) is integrally formed with a plurality of equidistant disc rings (3).

2. The high temperature resistant insulation short circuit prevention device according to claim 1, characterized in that: The front end of the ceramic insulating column is provided with an embedding groove, in which a deformation sealing ring (7) is embedded.

3. The high temperature resistant insulation short circuit prevention device according to claim 1, characterized in that: The inner isolation column (4) is fixedly mounted on the rear end of the ceramic insulating column (1) by embedding or threaded engagement, and a buffer pad (10) is provided between the inner isolation column (4) and the ceramic insulating column (1).

4. The high temperature resistant insulation short circuit prevention device according to claim 1, characterized in that: An insulating cavity (11) is integrally formed in the inner isolation column (4), and the insulating cavity (11) is located on the front side of the fixed body (6).

5. The high temperature resistant insulation short circuit prevention device according to claim 1, characterized in that: A communicating cavity is provided in the ceramic insulating column (1) and the disc ring (3), and an inner metal sheet (12) is fixedly installed in the cavity.

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